A043886 Numbers n such that 0 and 1 occur juxtaposed in the base 5 representation of n but not of n+1.

5, 30, 51, 55, 76, 80, 101, 105, 155, 176, 180, 201, 205, 226, 230, 251, 259, 280, 301, 305, 326, 330, 351, 355, 376, 384, 405, 426, 430, 451, 455, 476, 480, 501, 509, 530, 551, 555, 576, 580, 601, 605, 780, 801, 805, 826, 830